Rated 5 out of 5 stars
When I found this addon, FF became almost a new browser entirely. Just the right-clicks it saved me by just giving me buttons to close tabs to left or right, just that time saved probably adds up to a full day by now.
I love this one dearly, and I miss it terribly, PLEASE bring it to the current FF version!
Due the limitation of one button per add-on imposed by the new add-on system. Updating this is impossible. I am trying to split out some of the buttons into their own extensions instead. It is a lot of work and I do have a day job.